Roller gearing for drafting mechanisms for textile fibers



J. NOGUERA March 6, 1951 ROLLER GEARING FOR DRAFTING MECHANISMS FOR TEXTILE FIBERS 3 Sheets-Sheet 1 Filed Oct. 1'7, 1945 22w ose DZ vo ziza 17mm; #Mu

March 6, 1951 NOGUERA 2,544,468

ROLLER GEARING FOR DRAFTING MECHANISMS FOR TEXTILE FIBERS 5 Sheets-Sheet 2 Filed Oct. 17, 1945 [7111 hlzr 1 6*}? 70A J o zzira March 6, 1951 NOGUERA 2,544,468

ROLLER GEARING FOR DRAFTING MECHANISMS FOR TEXTILE FIBERS r 47394/ 42 J6 J? 4i J2me A97 Patented Mar. 6, 1951 ROLLER GEARING FOR DRAFTING MECH- ANISMS FOR TEXTILE FIBERSv Joseph Noguera,'Manchester, England, assignor to Casablancas High Draft Company Limited, Manchester, England, a British company Application October 1'1, 1945, Serial No. 622,766 In Great Britain October 19, 1944 This invention relates to the gearing associ ated with the drafting rollers of drafting mechanism for textile fibres.

Such gearing normally consists of a back roller pinion, a middle roller pinion, a double carrier wheel between the back and middle roller pinions and engaging both, and a back roller wheel which is driven by the change draft pinion. The back and middle roller pinions and the back roller wheel are mounted on the rollers themselves and 5 Claims. (Cl. 19-130) 2 associated with the drafting rollers ofdrafting mechanism for textile fibres, said gearing comprising aback roller pinion, a middle roller pinare keyed thereto, so that any play between the rollers and the gears results in eccentricity.

The rollers are supported on one side of the back and middle roller pinions by the usually open bearings of the slide of the first roller stand, and on the other side by an open or closed bearing bolted on the roller beam. The pressure on the gears is considerable and is taken by the rollers, which is most undesirable since the drafting rollers have an important function to perform in the drafting mechanism. As a result of this pressure, it often happens that there is considerable deflection of the bottom rollers between the first and second roller stands, and the rollers do not revolve uniformly as they should for correct drafting. Breakages are not uncommon through the constant bending stresses, mostly occurring at a point between the pinions and the slide. The rollers are not usually interchangeable and in the event of breakage or other damage, a new gearing-end roller must be made to fit the roller next to it in the line. It is also difiicult to bring the gears into correct mesh whenever the gearing has been dismantled since observation is difilcult and it is almost impossible to move any of the rollers round to allow the double carrier wheel to drop into gear with the back and middle roller pinions without taking down the roller weighting rightalong the machine. 7

It is the principal object of the present invention to overcome these disadvantages and to provide an arrangement in which they pinions drive the rollers correctly without imparting any undesirable stresses thereto.

According to the invention, the back and mid dle rollers are merely in driving engagement with is provided means for supporting th gearing ion, a double carrier wheel meshing with both said back an'dmiddle roller pinions, and with a compound pinion 'rotatably associated with the back roller wheel, consisting of unitary means for supporting said middle roller and compound pinions and said-double carrier wheel so that they are constantly in mesh, and separate means for supporting said back, roller pinion so that it is constantly'in mesh with said double carrier wheel."

The invention will now be described by way of example with reference to the accompanyings, in which:

Figure 1 illustrates diagrammatically the usual arrangement of the roller gearing.

Figure 2 illustrates diagrammatically the arrangement of the roller gearing according to the invention.-

- Figure 3 is a side elevation of the supporting means provided according to 'theinvention.

Figure 4 is a plan'view corresponding to Figure 3, and

Figure 5 is a section on the line AA of Figure 3.

' The gearing illustrated in Figures 2-5 differs from the normal arrangement as will be understood from consideration of Figure 1. Figure 1 represents the normal arrangement, in which the back roller wheel Ill is mounted on the shaft ll carrying the back roller pinion l2 fromwhich the drive is communicated to the middle roller pinion l3 by means of the double carrier wheel [4. The back roller wheel I0 is driven by the change draft pinion l5 driven in turn by the crown wheel It. The arrangement of gearing to which the present invention is applied is diagrammatically illustrated in Figure 2, from which it will be seen that the back roller wheel I0 is mounted on an independent shaft I! which carries a compound pinion 58 which drives the double carrier wheel 52 which isdisposed beneath the back and middle roller pinions 4B and Y50 .respectively with which it meshes. This arrangement has advantages which it is unnecessary to discuss in connection with the present invention.

Means are provided according to the invention for supporting the back roller wheel It], the compound pinion 58, the'double carrier wheel 52,,

and the back and middle roller pinions 48 and 50, on the roller beam or other part fixed to the machine, and said means are illustrated in Figures 3-5.

is designated by reference numeral 20 and may 5 be=ca1leda; support bracket; andqvcomprises a, base 2.l,. by;means-- of which the member is se- I cured to the roller beam 22, as by bolts 23 and nuts 24.

Upwardly extending from said -eibaser 4 carrier wheel 52, the compound pinion 58, double carrier wheel 52 and back and middle roller pinions 48 and 50 will always be correctly in mesh.

In order to provide for the correct adjustment t of the setting of the back rller support and the "carrier, bracket withrespect zto each other and with respect to the support bracket, the respective arcuate slots must be struck about the correct 2| are a short arm 25 and,a lo ng.arm .2fi,,.said.. .0 centres... Thus,. the slot 33 in the foot of the arms 25 and 26 being-formed;,with'telongated.:,.;: carrier bracket and the lower slot 35 in the straight slots 2'! and 28 respectively; The secquadrant arm must be struck about the axis of 0nd of said memberszisudesignatedzrbyrreference themiddle'roller pinion G, and the upper slot numeral 29 and ma becalledia carrier bracket r. 1 134cm: said quadrant arm abOut the axis of the and comprises a gear box 30--'-intermediate'-a foot *'double carrier wheel 52, while the slot 4|] in the 3| and a quadrant arm 32-,-.saidtfoot having an inclined arm.of the back roller support must also arcuate slot 33 therein and saidquadranti'arm having upper and lower arcuate slots 34 and 35 respectively therein. The third mem-beris'desig- 'be..struck about the axis of the double carrier wheel 52.

From the foregoing, it will be seen that the nated by reference-numeral 36 and may be called middle and back srollers, 60 and SI respectively, 1 1' awbackrroller support-and comprisesaazbearing areerelievednof zallzrbendingestressesz due to the 3.1 for; the,ebacktirolleripinion: depending: pivot 2; .r:pressu1.e :on' theigears' and are drivem thereby, arms 38 and an inclinedsarm:3.8=;having::an:arcuwhich not only resultszin increased life 50f said ate slota40.---therein. r:; .:rollers but: also :in'improved:efficiency-thereof. I The-"carrier bracketm iszadjustably connected zb -Furthermore, the vari0us pinions arezassembled to. the: supportcebracket :20 byimean's )Of: bolts :as-a :unit; and the-problem; of gputtingathem into .41: passed :throughoverlapping portions:iof the orrectme'sh does notiarise. I. wlower=arcuates1ot in the quadrantarm32 of :Ii-claim:

the carrier bracket 128 and. the. slot 28 v in the wMeans .forzsupnortingzgearing "for theidraft- "supportrbracket20,501: the oneshandgrandiof the '30 ingygrollers inn-drafting .amechanisrrr fcrtextile arcuatea slot 133 in. the? foot 1.31 of; thew-carrier .-:bracket.=2t and the sloti2lziin theisupport: bracket 20, on the other hand, said bolts being-"secured by nuts 42: -T-he.-- gear. box -.30.=. associ ated with wfibrest:saidrgearingjncludingcal-backaroller piniom: a: middle I rollerz-pinion; ccmpoundi-pinion andia; double 'carrierrwheelxsaid -doublercarrier wheel beingdnflnesh'withitboth said back and .1 thew-carrier bracket :29rcomprises'ta:bearing :43

for the double carrier wheel 52; and oneach side :thereof;additionalz=bearings 44 rand :45 for the membersecured on a..fixed-i'part of the drafting compoundipinicni58. and thefimiddle' roller-pinion -mechanism, a bracketafor:supportingrsaid:middle "50 respectivelyi'u'Ii-heibacksroller support 36 is w-fl roller; pinion, said-1compound'rpiniom-and said :adjustablyzzconnected )to the carrier bracket 29 .10 double carriertwheel'solthat they arel'constantly by the engagement of said pivot arm's:38' with 2:1 in mesh rsaidztbracketrbeing attached dzo' said i the bearingc43 and-by means of a [70113246 passed doubleearmed.gmembercsoithat:it canabeadjusted throughaoverlapping-sporticns; of the arcuate slot v-x inyarcs .extendingtabout thenaxisioftsaidrmiddle in the iinclinednarm of the backroller sup- =roller.:.pinion; and:a.further;device for supporting port 36 and the upper arcuate-slot 34 inthe .11saidwback roller:-pinion 'SOilISit-fili is.:constantly in quadrant arm ilmnf the carnienbracket -2 9, said .mesh'W-ith saidzdouble carrier. wheel; said further o being secured by a nut 47. devicebeingad-justably supportedonisaidcbracket.

-'I-he back roller 'pinicn :consists of a' hollow 12::Means for zsupportingggearingnaccording to a pinion :48 which is supported in the bearing 31 ,claim:1;wherein:said:bracket comprisesrazgear box wand is formed *with a'-- keywa'y 49i ----'1' he-middle ;5 havingrbearines ion-supporting; r sp t y said e roller'pinionliii is supported-in the bearing 45 ;--:i':-'middle..1t01-ler andzcomp d p a and similarly formed with a-keyway 51; The ing for.- supporting saiddoublezcarrieri-wheeL a double carrier-wheel -52 w-hich meshes with pinfootzmembenon one side ofrsaid gear boxehaving ions 48 and is supported -in bearing 43: The an:ar.cua;t'e slot-thereinstruckabout the-taxis of p middle roller-Shafts 53 and 54 re- ;said,-midd1e roller .-pinion -,zsaid foct.being. conspectively are supported 'by the roll stand 55' and nected to onetarm 0f said;double-armedrmember are simply slid intc their respective pinions and bymeans of aibolt engaging-in saidarcuate slot,

- are-driven therefrcm by-the-engagement"of keys and aquadrant arm havingamupperarcuate slot 56 on the shafts with the -=respective-keyways. struck about thez-axis-of thedoublecarrien wheel The front roller shaftfi'l is also supportedin the 0 and a lower arcuate slot struck about the axis roll stand=and-is-driven-from= the-crownwheel 0f; the,.middle-roller, pinion,,.sa idquadrant arm in the usual-way? "I'heeompcundrpinion 58 is beingconnected-to the second.arinof,saiddoub1esupported in bearing-fl and is keyed to shaft 59 armed member.by.means.of..a bolt,.enga in in which also carries thejback roller wheel l0. .said lower. arcuate slot.

It will be appreciated' that the-setting 'of the 05 3. ans f r supporting earin accordin to backroller support 36 and the carrier bracket claim lwherein. said device fortsupporting said 29gwith; respect-to each other and'to the support backroller pinion-comprises .a bearing for said bracket 20" can be adjusted bygadjusting the backzroller. pinion, arms, depending. from said relative positions of the various overflapping' bearing for engagement with the bearing-of said slots referred tog; Furthermore,;as the. bearings .70-.double.carrier wheel. and .an.inclined.arm having .J middle rollerii pinions and with .i said; compound pinion; isaidlsmeans comprising a? double-armed or thecom c ndipin on 58,. the double car- 1 rier wheel 52 andimiddlej,rollerjpjnion .50 are fixed relatively to, each .other .and .,as the bearing for theback roller. pinion .48 can only move on an arc struck about the axis of,the,; double .an arcuateslctthereinstruck about theeaxis of said .dcuble carrier wheel,.said arm/being attached to said bracket byrmeanseof a bolt enl gaging.v inasaid .arcuate. slot. 75.. .14. .Means for supportin agearingtac'cording to claim 1 wherein said double-armed member comprises a base which is secured on a fixed part of the mechanism and two arms upwardly extending one on each side of said base, said arms having elongated straight slots formed therein for receiving securing means for attaching said bracket to said member.

5. Means for supporting gearing for the drafting rollers in drafting mechanism for textile fibres, said gearing including a back roller pinion, a middle roller pinion, a compound pinion and a double carrier wheel, said double carrier wheel being in mesh with both said back and middle roller pinions and with said compound pinion, said means comprising a member attached to a fixed part of' the mechanism and having two slotted arms formed thereon, a bracket having a gear box provided with bearings respectively for supporting said middle roller pinion, said compound pinion and said double carrier wheel so that they are constantly in mesh, a foot on one side of said gear box having an arcuate slot therein for attachment to one of said arms by means of a bolt which engages in said arcuate slot and the slot in said arm, and a quadrant arm on the other side of said gear box having upper and lower arcuate slots formed therein, said quadrant arm Number Number being attached to the other arm of said doublearmed member by means of a bolt engaging in said lower arcuate slot and in the slot in said other arm, and a further device having a bearing for supporting said back roller pinion, arms depending from said bearing for engagement with said double carrier wheel bearing and an inclined arm having an arcuate slot formed therein, said inclined arm being attached to the quadrant arm on said bracket by means of a bolt engaging in the arcuate slot in said inclined arm and in the upper arcuate slot in said quadrant arm.

JOSEPH NOGUERA.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date Lambert Oct. 31, 1939 Rooney Oct. 16, 1945 FOREIGN PATENTS Country Date 4 Great Britain of 1906 Great Britain Mar. 19, 1931 

